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Finding the Fourth Proportional to 66,446.80, 99,670.20 and 63,854.80

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Solution

The fourth proportional to 66,446.80, 99,670.20 and 63,854.80 is: 95,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446.80 : 99,670.20 = 63,854.80 : x
  2. Step 2: Convert to fraction form
    66,446.80/99,670.20 = 63,854.80/x
  3. Step 3: Cross multiply
    66,446.80x = 99,670.20 × 63,854.80
  4. Step 4: Simplify right side
    66,446.80x = 6,364,420,686.96
  5. Step 5: Solve for x
    x = 6,364,420,686.96/66,446.80
  6. Step 6: Final answer
    x = 95,782.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.